Precision CNC Machining Services in China
- High-Quality Parts | On-demand Custom
- From Prototypes to Low-Volume Production | 3–7 Day Delivery
- Affordable Custom CNC Part Prototyping with Precision and Fast Turnaround
A trusted low-cost CNC machining partner worldwide






Confidentiality Assured with NDAs
We understand the importance of safeguarding your confidential information. We gladly accept Non-Disclosure Agreements (NDAs) before reviewing any designs. Submit an inquiry and we will follow up with an email providing the next steps.
Advanced CNC Machining Services for Custom Components
XTJ CNC is an ISO 9001-certified manufacturer delivering precision CNC machining for both metal and plastic parts. Our in-house capabilities span 3-, 4-, and 5-axis CNC machining, including milling, turning, Electrical Discharge Machining (EDM), and surface grinding. We achieve tolerances as tight as ±0.002 mm.
With 20+ years of experience and 100+ CNC machines across two manufacturing facilities, we excel in custom machining from rapid prototyping to large-scale production. Our surface finishing options, including anodizing and powder coating, ensure every part combines high performance with superior aesthetics.
From startups to global enterprises, XTJ CNC is your trusted partner for on-demand CNC machining solutions. Get your quote today!
Why Partner with XTJ CNC for CNC Machining?
We offer the capacity and capabilities of two manufacturing facilities, with the ease of dealing with a single supplier. You get the specialisation of our machinery while we handle all communications, delivery, and quality control.

Unmatched Precision
Achieve tolerances as tight as ±0.002mm with our state-of-the-art CNC machines, ensuring your parts meet the most demanding specifications across every industry.

Rapid Turnaround
Get your parts in as fast as 3–7 days with our streamlined production process, helping you meet tight project deadlines without compromise.

Material Expertise
Work with a wide range of materials — including aluminum, stainless steel, titanium, and engineering plastics — tailored precisely to your application requirements.

Low Volume Flexibility
From a single prototype to small batch production, we offer flexible solutions with no minimum order quantity (MOQ), supporting every stage of your development.

Quality Assurance
ISO 9001 certified and using advanced CMM inspection tools, we ensure every part meets your exact requirements before it leaves our facility.

Experienced Engineers
Our engineers bring deep experience across multiple industries and can handle any precision tolerance CNC-machined part with complex geometries.
Comprehensive CNC Machining Solutions for Every Project
XTJ CNC is your trusted one-stop supplier for CNC machining, catering to projects of any scale – from small batches to high-volume production of 10,000+ end-use parts. Explore our tailored CNC machining services below.
Leverage our advanced 3-axis and 5-axis CNC machines to produce high-precision aluminum parts with complex geometries. Achieve tolerances as tight as ±0.005mm, ideal for automotive, electronics, and other precision industries.
Our CNC turning services deliver precise cylindrical parts with smooth finishes. Perfect for producing shafts, fittings, and other round components in metals and plastics.
Utilise our multi-axis CNC milling capabilities to create intricate parts with exceptional accuracy. From prototypes to small batches, we handle a wide range of materials and complex designs.
EDM & Wire-Cut Service
EDM is ideal for machining high-hardness, difficult-to-cut materials such as carbide, titanium alloys, and mold steel using high-frequency electrical discharge. Perfect for tight tolerances and complex geometries.
Need CNC-Machined Parts?
All information and uploads are secure and confidential.
From Design to Delivery in 5 Simple Steps
Collaborate with us effortlessly: submit your design, get expert feedback, approve your quote, and launch production. Stay informed at every stage for reliable, high-quality outcomes.
Upload Your Design
Submit your CAD file through our secure online portal to receive an instant quote within 24 hours.
Engineering Review
Our expert engineers review your design, provide DFM feedback, and optimise for manufacturability.
CNC Machining
We use advanced 3-axis and 5-axis CNC machines to produce your parts with precision and efficiency.
Quality Inspection
Every part undergoes rigorous inspection using CMM and other tools to ensure it meets your exact specifications.
Fast Delivery
Your parts are securely packaged and shipped to your location, arriving in as little as 3–7 days.
Wide Range of Materials for CNC Machining

Aluminum
Lightweight, corrosion-resistant, and ideal for automotive, electronics, and other precision applications.

Stainless Steel
Durable and corrosion-resistant, perfect for medical devices and food equipment.

Titanium
High strength-to-weight ratio, suitable for medical implants and other high-performance applications.

Brass
Easy to machine, great for decorative and electrical components.

Copper
Excellent conductivity, used in electrical and thermal applications.

Mild Steel
Cost-effective and versatile for industrial applications.

ABS
Tough and impact-resistant, ideal for consumer product housings.

PEEK
High-performance plastic with excellent heat and chemical resistance, used in medical and industrial applications.

POM (Delrin)
High stiffness and low friction, perfect for gears and bearings.

PC (Polycarbonate)
High transparency and impact resistance, suitable for optical parts.

Nylon
Wear-resistant and flexible, great for mechanical components.

PTFE (Teflon)
Low friction and chemical resistance, used in seals and gaskets.
Custom Surface Finishes for Your CNC Parts
| Name | Applicable Materials | Colors | Can be applied with |
| Alodine | Aluminum | Clear, gold | Media Blasting, Tumbling, Type II Anodizing* Type III Anodizing*, Type III Anodizing with PTFE* |
| Anodizing | Aluminum | Clear, black, grey, red, blue, gold | Media Blasting, Tumbling, Alodine* |
| Black Oxide | Steel, Stainless Steel | Black | Media Blasting, Tumbling, Passivation |
| Electroless Nickel Plating | Aluminum, Steel, Stainless Steel | – | Media Blasting, Tumbling |
| Electropolishing | Steel, Stainless Steel | – | – |
| Media Blasting | Aluminum, Steel, Stainless Steel, Brass, Bronze, Copper | – | All post processes except Electropolish and Powdercoat |
| Nickel Plating | Aluminum, Steel, Stainless Steel | – | Media Blasting, Tumbling |
| Passivation | Steel, Stainless Steel | – | Black Oxide, Electroless Nickel Plating, Zinc Plating, Tumbling, Media Blasting |
| Powder Coating | Aluminum, Steel, Stainless Steel | Black (20% or 90% gloss), white (20% or 90% gloss) | – |
| Tumbling | Aluminum, Steel, Stainless Steel, Brass, Bronze, Copper | – | All post processes except Electropolish and Powdercoat |
| Zinc Plating | Steel, Stainless Steel | Clear: light blue coating, black: glossy black coating | Media Blasting, Tumbling, Passivation |
* Denotes a conditional post-process. These finishes can only be applied after the preceding process has been completed; they are not available as standalone treatments. For example, Type II Anodizing* under the Alodine row means Anodizing can follow Alodine, but only as a secondary step in that sequence. Please contact our engineers if you need guidance on the right finishing combination for your part.
Our CNC Machining Capabilities
| Feature | CNC Milling | CNC Turning |
| Max Part Size | 1000 x 800 x 600 mm | 500 mm diameter x 1000 mm |
| Min Part Size | 4 x 4 x 4 mm | 2 mm diameter |
| Tolerances | ±0.005 mm | ±0.005 mm |
| Lead Time | 3-7 days | 3-7 days |
| Materials | Aluminum, Stainless Steel, Titanium, Plastics | Aluminum, Stainless Steel, Titanium, Plastics |
| Surface Finishes | Anodizing, Bead Blasting, Powder Coating, Polishing | Anodizing, Bead Blasting, Powder Coating, Polishing |
Serving Diverse Industries with Precision CNC Parts
We align our processes with industry-specific requirements, delivering CNC machining solutions that meet ISO 9001, AS9100, and FDA standards where applicable.
Precision Parts
Automotive
Medical
Electronics & Robotics
What Our Clients Say About Us
XTJ CNC delivered high-precision aluminum parts for our project on time. Their 5-axis machining capabilities are top-notch!
- Author: John S., Precision Engineer, USA.
The low-volume machining service was perfect for our prototype development. Fast, reliable, and cost-effective!
- Author: Emily R., Product Designer, Germany.
Their team provided excellent support throughout the process, from design optimization to final delivery. Highly recommend!
- Author: David L., Automotive Manufacturer, Japan.
Frequently Asked Questions
CNC (Computer Numerical Control) machining is a subtractive manufacturing process that uses computer-controlled cutting tools to shape metal and plastic parts to precise specifications. It can produce everything from simple shafts and brackets to complex multi-axis components with intricate geometries, used across automotive, medical, aerospace, and electronics industries.
We machine a wide range of metals and plastics, including aluminum (6061, 7075), stainless steel (304, 316), titanium (Grade 5), brass, copper, mild steel, and engineering plastics such as ABS, Nylon, PEEK, Polycarbonate, and Acetal. Our material experts can advise on the best choice for your application and budget.
Our standard tolerance is ±0.005mm, with precision CNC machining achievable down to ±0.002mm using our state-of-the-art 3-, 4-, and 5-axis machines and CMM inspection equipment. Tighter tolerances are available on request for critical applications.
Standard lead time is 3–7 business days for most orders. Rapid prototyping can be completed in 1–3 days. Production runs of 100–1,000+ parts typically take 7–14 days, depending on complexity and volume. We offer expedited service on request.
Yes. We gladly sign Non-Disclosure Agreements (NDAs) before reviewing any CAD files or design data. All uploaded files are handled securely and never shared with third parties. Submit an inquiry and we will send you our NDA for review.
We accept all standard CAD formats, including STEP (.stp), IGES (.igs), DXF, DWG, STL, and SOLIDWORKS files (.sldprt / .sldasm). PDF 2D drawings are also accepted alongside 3D files for GD&T references. Our engineers review all files and provide free DFM feedback within 24 hours.
We have no minimum order quantity (MOQ). We support single prototypes through to high-volume production of 10,000+ parts. This flexibility makes XTJ CNC an ideal partner for product development, low-volume manufacturing, and full production scaling.
Ready to Start Your CNC Machining Project?
Upload your design for a free quote or connect with our team to discuss your needs.